26667061990 has 32 divisors (see below), whose sum is σ = 48656026080. Its totient is φ = 10521772800.

The previous prime is 26667061973. The next prime is 26667061997. The reversal of 26667061990 is 9916076662.

It is a super-2 number, since 2×26667061990² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26667061997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 339105 + ... + 410275.

It is an arithmetic number, because the mean of its divisors is an integer number (1520500815).

Almost surely, 2^26667061990 is an apocalyptic number.

26667061990 is a deficient number, since it is larger than the sum of its proper divisors (21988964090).

26667061990 is a wasteful number, since it uses less digits than its factorization.

26667061990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71688.

The product of its (nonzero) digits is 1469664, while the sum is 52.

The spelling of 26667061990 in words is "twenty-six billion, six hundred sixty-seven million, sixty-one thousand, nine hundred ninety".